/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.l2j.gameserver.network.clientpackets;

import java.util.logging.Logger;

import net.sf.l2j.Config;
import net.sf.l2j.gameserver.datatables.SkillTable;
import net.sf.l2j.gameserver.datatables.SkillTreeTable;
import net.sf.l2j.gameserver.model.L2EnchantSkillLearn;
import net.sf.l2j.gameserver.model.L2ItemInstance;
import net.sf.l2j.gameserver.model.L2ShortCut;
import net.sf.l2j.gameserver.model.L2Skill;
import net.sf.l2j.gameserver.model.actor.L2Npc;
import net.sf.l2j.gameserver.model.actor.instance.L2NpcInstance;
import net.sf.l2j.gameserver.model.actor.instance.L2PcInstance;
import net.sf.l2j.gameserver.network.SystemMessageId;
import net.sf.l2j.gameserver.network.serverpackets.ShortCutRegister;
import net.sf.l2j.gameserver.network.serverpackets.SystemMessage;
import net.sf.l2j.gameserver.network.serverpackets.UserInfo;
import net.sf.l2j.gameserver.util.IllegalPlayerAction;
import net.sf.l2j.gameserver.util.Util;
import net.sf.l2j.util.Rnd;

/**
 * Format chdd
 * @author -Wooden-
 */
public final class RequestExEnchantSkill extends L2GameClientPacket
{
	private static Logger _log = Logger.getLogger(RequestExEnchantSkill.class.getName());
	
	private int _skillId, _skillLvl;

	@Override
	protected void readImpl()
	{
		_skillId = readD();
		_skillLvl = readD();
	}

	@Override
	protected void runImpl()
	{
		if (_skillId <= 0 || _skillLvl <= 0) // minimal sanity check
			return;
		
		final L2PcInstance player = getClient().getActiveChar();
        if (player == null)
        	return;

        final L2Npc trainer = player.getCurrentFolkNPC();
        if (trainer == null)
        	return;

        if (!player.isInsideRadius(trainer, L2Npc.INTERACTION_DISTANCE, false, false) && !player.isGM())
            return;

        if (player.getSkillLevel(_skillId) >= _skillLvl)// already knows the skill with this level
            return;

		if (player.getClassId().level() < 3 || player.getLevel() < 76)
			return;

        final L2Skill skill = SkillTable.getInstance().getInfo(_skillId, _skillLvl);
		if (skill == null)
			return;
		
        int counts = 0;
        int _requiredSp = 10000000;
        int _requiredExp = 100000;
        byte _rate = 0;
        int _baseLvl = 1;

        L2EnchantSkillLearn[] skills = SkillTreeTable.getInstance().getAvailableEnchantSkills(player);
        for (L2EnchantSkillLearn s : skills)
        {
        	L2Skill sk = SkillTable.getInstance().getInfo(s.getId(), s.getLevel());
        	if (sk == null || sk != skill)
        		continue;
        	
        	counts++;
        	_requiredSp = s.getSpCost();
        	_requiredExp = s.getExp();
        	_rate = s.getRate(player);
        	_baseLvl = s.getBaseLevel();
        }

        if (counts == 0)
        {
        	Util.handleIllegalPlayerAction(player, player.getName() + " tried to enchant a skill that he normally can't.", IllegalPlayerAction.PUNISH_KICK);
        	return;
        }

        if (player.getSp() < _requiredSp)
        {
        	player.sendPacket(SystemMessageId.YOU_DONT_HAVE_ENOUGH_SP_TO_ENCHANT_THAT_SKILL);
        	return;
        }
        
        if (player.getExp() < _requiredExp)
    	{
        	player.sendPacket(SystemMessageId.YOU_DONT_HAVE_ENOUGH_EXP_TO_ENCHANT_THAT_SKILL);
    		return;
    	}
        
		if (Config.ES_SP_BOOK_NEEDED && (_skillLvl == 101 || _skillLvl == 141)) // only first lvl requires book
    	{
			// Check for spellbook.
    		L2ItemInstance spb = player.getInventory().getItemByItemId(6622);
    		if (spb == null)
    		{
    			player.sendPacket(SystemMessageId.YOU_DONT_HAVE_ALL_OF_THE_ITEMS_NEEDED_TO_ENCHANT_THAT_SKILL);
    			return;
    		}
    		
    		player.destroyItem("Consume", spb, trainer, true);
    	}
        
        // Remove XP/SP, and send messages.
    	player.getStat().removeExpAndSp(_requiredExp, _requiredSp);
        
        // Add the skill.
        if (Rnd.get(100) <= _rate)
        {
        	player.addSkill(skill, true);

        	if (Config.DEBUG)
        		_log.fine("Learned skill " + _skillId + " for " + _requiredSp + " SP.");

        	player.sendPacket(SystemMessage.getSystemMessage(SystemMessageId.YOU_HAVE_SUCCEEDED_IN_ENCHANTING_THE_SKILL_S1).addSkillName(_skillId));
        }
        else
        {
        	if (skill.getLevel() > 100)
        	{
        		_skillLvl = _baseLvl;
        		player.addSkill(SkillTable.getInstance().getInfo(_skillId, _skillLvl), true);
        		player.sendSkillList(); 
        	}
        	player.sendPacket(SystemMessage.getSystemMessage(SystemMessageId.YOU_HAVE_FAILED_TO_ENCHANT_THE_SKILL_S1).addSkillName(_skillId));
        }
        
        L2NpcInstance.showEnchantSkillList(player, trainer, player.getClassId());
        
		player.sendPacket(new UserInfo(player));
		player.sendSkillList();
		
        // update all the shortcuts to this skill
        L2ShortCut[] allShortCuts = player.getAllShortCuts();
        for (L2ShortCut sc : allShortCuts)
        {
        	if (sc.getType() == L2ShortCut.TYPE_SKILL && sc.getId() == _skillId)
        	{
        		L2ShortCut newsc = new L2ShortCut(sc.getSlot(), sc.getPage(), sc.getType(), sc.getId(), _skillLvl, 1);
        		player.sendPacket(new ShortCutRegister(newsc));
        		player.registerShortCut(newsc);
        	}
        }
	}

	@Override
	public String getType()
	{
		return "[C] D0:07 RequestExEnchantSkill";
	}
}